|#|Name|Office|Political Party|Occupation|
|---|---|---|---|---|
|1|Ole Olsen Strømme|1886–1901||Church bell ringer|
|2|Peder Olai Kleppe|1902–1919||Fisherman|
|3|Olai Naustheller|1920–1925||Farmer|
|4|Mikkel Nilsen Birkeland|1926–1935||Farmer|
|5|Magnus Larssen|1935–1937||School teacher|
|6|Salomon O. Fagerbakke|1938–1945||Fisherman|
|7|Salomon V. Kalvenes|1946–1959||Fisherman|
|8|Rikard S. Storebø|1960–1969|Liberal Party|Social security manager|
|9|Peder Kalve|1970–1975|Conservative Party|Maritime pilot|
|10|Magnus Stangeland|1976–1981|Centre Party|School principal|
|11|Knut K. Kalvenes|1982–1985|Conservative Party|Retailer|
|12|Hallvard Møgster|1986–1989|Christian Democratic Party|Captain|
|13|Inge Bjarne Storebø|1990–2001|Conservative Party|Bank manager|
|14|Olav P. Årland|2001–2003|Christian Democratic Party|Shipmaster|
|15|Helge André Njåstad|2003-|Progress Party|Student|

Question: after what year were austevoll mayors affiliated with political parties?
Answer: 1959